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    <title>Document</title>
    <script>
        class StaticClass {
            static count = 1;// 静态属性
            static incrementAndGet() {// 静态方法
                StaticClass.count++;
                return StaticClass.count;
            }
        }
        console.log(StaticClass.count);// 1
        console.log(StaticClass.incrementAndGet());// 2
        console.log(StaticClass.count);// 2
    </script>
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